A steel structure welding machine

Abstract

This invention relates to the field of welding equipment technology, specifically to a steel structure welding machine. The invention includes: a welding module, comprising: a moving module; a welding unit for welding; a pretreatment unit for pre-treating the weld before welding; and a lifting module for synchronously raising and lowering the welding unit and the pretreatment unit. A fan is mounted on the top of the moving module, and the fan's outlet is connected to a swing nozzle. The pretreatment unit includes: a cam; a power component for rotating the cam; a cross-shaped mounting frame mounted on the lifting module; and a guide block connected to the cross-shaped mounting frame. By providing the pretreatment unit, this invention allows for air cleaning of the area to be welded before welding using the swing nozzle, air drying of the pretreatment agent using the swing nozzle, and air cooling of the weld after welding using the swing nozzle.

Description

Technical Field

[0001] This invention relates to the field of welding equipment technology, and more specifically to a steel structure welding machine. Background Technology

[0002] Steel structures are building structures made of steel materials and are one of the most common structural types in the construction industry. Common examples include building steel structures, bridge components, chemical pipe corridors, railings, and curtain walls. During the manufacturing process, to achieve rust removal and prevention, processes such as silanization, pure manganese phosphating, water washing and drying, and galvanizing are used. Some components are typically fixed together by welding.

[0003] In existing technologies, a common welding method involves a welding carriage moving along a pre-set track to complete the welding operation simultaneously. However, during the welding of stainless steel, the weld and heat-affected zone react rapidly with oxygen in the air due to the high temperature, easily producing a series of oxides, which leads to blackening and discoloration of the weld surface; it may also damage the passivation layer on the stainless steel surface, reducing its corrosion resistance. Although conventional welding is accompanied by argon or mixed gas for protection, in the welding of long welds in large steel structures, the protective gas often suffers from insufficient coverage and diffusion due to wind interference, especially in outdoor construction environments, making it difficult to effectively inhibit weld oxidation. To solve the above problems, existing technologies have attempted to manually apply pretreatment agents before welding, but this has the following shortcomings: application depends on manual operation, resulting in low efficiency and poor uniformity; the coating dries slowly, easily accumulating or flowing on the workpiece surface, which is not conducive to subsequent welding; and it is difficult to match with the continuous operation process of the welding carriage, making it impossible to achieve online and automated operation.

[0004] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Summary of the Invention

[0005] The purpose of this invention is to provide a steel structure welding machine that can effectively solve the above-mentioned technical problems.

[0006] To achieve the objectives of this invention, the following technical solution is adopted:

[0007] A steel structure welding machine includes: a welding module, the welding module including: a moving module, a welding unit for performing welding, a pretreatment unit for pretreating the weld before welding, and a lifting module for synchronously raising and lowering the welding unit and the pretreatment unit.

[0008] The mobile module is equipped with a fan on its top, and the air outlet of the fan is connected to a swing nozzle.

[0009] The pretreatment unit includes: a cam; a power component that drives the cam to rotate; a cross-shaped mounting bracket disposed on the lifting module; a guide block connected to the cross-shaped mounting bracket; a transmission component that is slidably connected to the guide block in the vertical direction; a blow-suction component that is pulsatorically connected to the bottom of the transmission component; a fixing component connected to the blow-suction component; a piston tube is connected to the air outlet end of the blow-suction component; a piston rod is slidably installed inside the piston tube; a U-shaped hinge plate is installed at the end of the piston rod; and the U-shaped hinge plate is rotatably connected to the oscillating nozzle.

[0010] Furthermore, the power assembly includes: a motor mounting plate mounted on top of the connecting frame;

[0011] A first motor is mounted on the motor mounting plate;

[0012] The first synchronous belt pulley is connected to the output end of the first motor for transmission.

[0013] The second synchronous pulley is connected to the first synchronous pulley via a synchronous belt.

[0014] The cam is connected to the second synchronous belt pulley via a drive shaft.

[0015] Furthermore, the transmission component consists of a Z-shaped block, a vertical block fixedly mounted on top of the Z-shaped block, and a roller rotatably mounted on top of the vertical block, wherein the roller is in rolling connection with the cam.

[0016] Furthermore, the cross-shaped mounting bracket is also rotatably connected to a second guide member, and a third guide groove is provided through the second guide member;

[0017] A first guide member has a guide hole, a first guide groove, and a second guide groove respectively opened from top to bottom on the first guide member; an applicator is slidably connected in the guide hole; a first connecting post is slidably connected in the first guide groove, and a second connecting post is slidably connected in the second guide groove;

[0018] The first connecting post is slidably connected to the third guide groove, and the first connecting post passes through the third guide groove and is rotatably connected to the transmission component; a connecting hole is also provided on one side of the third guide groove, and the second connecting post is rotatably connected to the connecting hole.

[0019] Furthermore, the first connecting post and the second connecting post are connected by a telescopic connecting piece; the telescopic connecting piece is disposed between the third guide groove and the first guide member.

[0020] Furthermore, the coating component includes: a sliding rod slidably connected to the guide hole, a U-shaped mounting plate mounted on the top of the sliding rod, and a coating head mounted inside the U-shaped mounting plate.

[0021] Furthermore, the cross-shaped mounting bracket is also connected to a storage box, and a discharge roller is rotatably mounted on the bottom of the storage box.

[0022] Furthermore, the welding unit includes: a connecting frame mounted on the slide of the lifting module, and a welding gun mounted on the other end of the connecting frame.

[0023] Furthermore, the mobile module includes: a vehicle body; wheels rotatably mounted on the bottom of the vehicle body; and a second motor for driving the wheels to rotate.

[0024] Compared with the prior art, the present invention has the following beneficial effects: By setting a pretreatment unit, the area to be welded can be cleaned by blowing air through the swing nozzle before welding, and the pretreatment agent can be dried by air blowing through the swing nozzle. The weld can also be cooled by blowing air through the swing nozzle after welding is completed. Attached Figure Description

[0025] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used together with the embodiments of the invention to explain the invention and do not constitute a limitation thereof.

[0026] Figure 1 This is a schematic diagram of the structure of a steel structure welding machine according to the present invention;

[0027] Figure 2 This is a schematic diagram of a steel structure welding machine according to the present invention;

[0028] Figure 3 This is a schematic diagram of the moving module of a steel structure welding machine according to the present invention;

[0029] Figure 4 This is a schematic diagram of the welding module of a steel structure welding machine according to the present invention;

[0030] Figure 5 This is a schematic diagram of the welding module of a steel structure welding machine according to the present invention;

[0031] Figure 6 This is a schematic diagram of the welding module of a steel structure welding machine according to the present invention from another angle;

[0032] Figure 7 This is a partial schematic diagram of the pretreatment unit of a steel structure welding machine according to the present invention;

[0033] Figure 8 This invention relates to a steel structure welding machine. Figure 4 A magnified view of part A in the middle;

[0034] Figure 9 This is an exploded view of the first guide and the second guide of a steel structure welding machine according to the present invention.

[0035] In the diagram: 1. Moving module; 2. Control module; 3. Control panel; 4. Welding module; 5. Lifting module; 6. Slide table; 7. First motor; 8. First synchronous pulley; 9. Synchronous belt; 10. Second synchronous pulley; 11. Cam; 12. Connecting frame; 13. Guide block; 14. Transmission component; 15. Spraying component; 16. First guide component; 17. Second guide component; 18. Blowing / suction component; 19. Fixing component; 20. Piston tube; 21. Piston rod; 22. U-shaped hinge plate. 23. Oscillating nozzle; 24. Welding torch; 25. Fan; 26. Vehicle body; 27. Second motor; 28. Wheel; 29. ​​First guide groove; 30. Second guide groove; 31. First connecting post; 32. Second connecting post; 33. Third guide groove; 34. Telescopic connecting piece; 35. Guide hole; 36. First connecting rod; 37. Cross-shaped mounting bracket; 38. Second connecting rod; 39. Third connecting rod; 40. Fourth connecting rod; 41. Storage box; 42. Discharge roller. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are some embodiments of the present invention, but not all embodiments.

[0037] In the description of this invention, it should be understood that the terms "center," "lateral," "longitudinal," "front," "rear," "left," "right," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this invention. When a component is referred to as being "fixed to" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component. When a component is considered to be "set on" another component, it can be directly set on the other component or there may be an intermediate component. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only.

[0038] like Figures 1 to 9 As shown, this invention relates to a steel structure welding machine, comprising:

[0039] Welding module 4 is used for pre-processing and welding of the steel structure; moving module 1 is used to drive welding module 4 to move along a predetermined track.

[0040] The top of the mobile module 1 is equipped with a control module 2, which encapsulates hardware such as control circuits, power modules, and communication modules. A control panel 3 is also installed on one side of the top of the mobile module 1. The control panel 3 is electrically connected to the control module 2, which facilitates manual control operations. For example, the welding current and trolley speed can be set by pressing buttons, or welding parameters (current, voltage, speed) can be displayed.

[0041] For example, when welding a circular steel structure, the steel structures are first spliced ​​together, then a track is installed on the surface of the steel structure near the splice joint, and then the moving module 1 is installed on the track, so that the moving module 1 moves along the track. During the movement, the surface of the steel structure is welded by the welding module 4 to complete the welding operation.

[0042] The moving module 1 includes: a vehicle body 26 for bearing load; four wheels 28 rotatably mounted on the bottom of the vehicle body 26; and a second motor 27 mounted on the top of the vehicle body 26. The second motor 27, in conjunction with a gear set, drives the wheels 28 to rotate, thereby moving the entire vehicle body 26.

[0043] The welding module 4 includes: a welding unit for welding, a pretreatment unit for pretreatment of the weld before welding, and a lifting module 5 that drives the welding unit and the pretreatment unit to move up and down synchronously. The lifting module 5 is fixedly installed on the top of the vehicle body 26 on the side in the forward direction.

[0044] The welding unit includes: a connecting frame 12 fixedly installed on the slide table 6 of the lifting module 5, and a welding gun 24 installed at the other end of the connecting frame 12; the connecting frame 12 is horizontally positioned as a whole, and the other end is located on the outside of the vehicle body 26. The connecting frame 12 can also be configured as a telescopic structure, and the horizontal position of the welding gun 24 can be adjusted by manually adjusting the length of the connecting frame 12.

[0045] A power assembly is also provided on the top of the connecting frame 12 near the lifting module 5. The power assembly includes: a motor mounting plate fixedly installed on the top of the connecting frame 12, a first motor 7 mounted on the motor mounting plate, a first synchronous pulley 8 driven by the output end of the first motor 7, a synchronous belt 9 driven by the first synchronous pulley 8, a second synchronous pulley 10 driven by the synchronous belt 9, and a drive shaft coaxially connected to the second synchronous pulley 10. A cam 11 is fixedly installed on the drive shaft. The first synchronous pulley 8 is driven to rotate by the first motor 7, which in turn drives the second synchronous pulley 10 to rotate by the synchronous belt 9, thereby driving the cam 11 to rotate. The first synchronous pulley 8, the synchronous belt 9, and the second synchronous pulley 10 are conventional parts and can be replaced by gear chains or pulley belts.

[0046] A first connecting rod 36 is installed on the side wall of the motor mounting plate. The first connecting rod 36 is on the same side as the welding torch 24. A cross-shaped mounting bracket 37 is fixedly installed at the end of the first connecting rod 36. A bearing seat is installed on the top of the cross-shaped mounting bracket 37. A bearing is installed on the bearing seat. The bearing is coaxially connected to the second synchronous pulley 10, which facilitates the installation of the second synchronous pulley 10.

[0047] The second connecting rod 38, the third connecting rod 39, and the fourth connecting rod 40 are respectively installed on the side wall of the cross-shaped mounting bracket 37 in the forward direction.

[0048] The pretreatment unit includes a guide block 13 installed at the other end of the second connecting rod 38. A connecting through hole is provided in the middle of the guide block 13 along the vertical direction, and a transmission component 14 is slidably installed in the connecting through hole.

[0049] The transmission component 14 consists of a Z-shaped block, a vertical block fixedly mounted on top of the Z-shaped block, and a roller rotatably mounted on top of the vertical block. The roller is in rolling connection with the cam 11. A return spring is connected between the transmission component 14 and the guide block 13 to drive the transmission component 14 to return to its original position. During the rotation of the cam 11, the vertical block slides downward as it rolls into contact with the cam 11, or returns to its original position upward as it is acted upon by the return spring.

[0050] The bottom of the Z-shaped block is connected to a blow-suction component 18, which includes a first cavity and a piston slidably mounted in the first cavity. The bottom of the first cavity is mounted on a fixing component 19; the fixing component 19 consists of an arc-shaped part and a straight part; the outer side of the arc-shaped part is fixedly connected to the straight part, and the inner side of the arc-shaped part matches the first cavity; the straight part is fixedly connected to the side wall of the bottom of the cross-shaped mounting bracket 37.

[0051] A fan 25 is also installed on the top of the vehicle body 26. The fan 25 is installed on one side of the lifting module 5. The air outlet of the fan 25 is connected to the swing nozzle 23. An L-shaped plate is also installed between the fan 25 and the swing nozzle 23. A round hole is opened in the middle of the L-shaped plate for the air blowing pipe to pass through. The fastener 19 can also be installed on the L-shaped plate.

[0052] The bottom of the first cavity is connected to a piston tube 20. A piston rod 21 is slidably installed inside the piston tube 20. A U-shaped hinge plate 22 is installed at the end of the piston rod 21. The U-shaped hinge plate 22 is rotatably connected to the swing nozzle 23. When the blow-suction component 18 is compressed or stretched, it drives the piston rod 21 to slide back and forth along the piston tube 20, which in turn drives the swing nozzle 23 to swing back and forth along the moving direction of the vehicle body 26. Thus, the gas blown out by the swing nozzle 23 cleans the area to be welded, or cools the area that has been welded, or accelerates the evaporation of the applied pretreatment agent.

[0053] The other end of the third connecting rod 39 is rotatably mounted with a second guide 17. The top of the second guide 17 is provided with a connecting through hole, which is rotatably connected to the third connecting rod 39. A third guide groove 33 is provided through the second guide 17. The shape of the third guide groove 33 can be designed according to the motion requirements. For example, it can be set as an arc, a semi-circle, or a combination groove as shown in the attached figure.

[0054] The pretreatment unit further includes: a first guide member 16, which has a guide hole 35, a first guide groove 29, and a second guide groove 30 respectively from top to bottom; an applicator 15 is slidably connected in the guide hole 35, a first connecting post 31 is slidably connected in the first guide groove 29, and a second connecting post 32 is slidably connected in the second guide groove 30; wherein, the first connecting post 31 is slidably connected to the third guide groove 33, and the first connecting post 31 passes through the third guide groove 33 and is rotatably connected to the transmission member 14; a connecting hole is also provided on one side of the arc-shaped portion of the third guide groove 33, and the second connecting post 32 is rotatably installed in the connecting hole; the first connecting post 31 and the second connecting post 32 are respectively installed on a telescopic connecting piece 34, which can extend and retract vertically, and the telescopic connecting piece 34 is located between the third guide groove 33 and the first guide member 16.

[0055] The coating component 15 includes: a sliding rod slidably connected to the guide hole 35, a U-shaped mounting plate installed on the top of the sliding rod, and a coating head installed inside the U-shaped mounting plate; the sliding rod is a polygonal rod or a round rod with a limiting structure, as long as it can prevent the coating head from rotating horizontally; the coating head is made of microporous foam material or a brush, capable of carrying pretreatment agent without dripping; when the coating head is flipped to the bottom, it contacts the surface of the metal to be welded and applies the pretreatment agent to the weld path, and when it is flipped back, it leaves the surface to avoid dragging too much liquid.

[0056] One end of the fourth connecting rod 40 is connected to a storage box 41, which stores a pretreatment agent. The pretreatment agent includes antioxidants, fluxes, etc., selected according to welding requirements, preferably in liquid or colloidal form suitable for coating. An opening is provided at the bottom of the storage box 41, and a discharge roller 42 is rotatably mounted on the opening to carry out the pretreatment agent inside the storage box 41 when the discharge roller 42 rotates. When welding stainless steel thin plates under conditions of no protective gas or weak protective gas, the pretreatment agent can be applied first, and then locally dried to reduce oxidation and blackening.

[0057] In this embodiment, when the first motor 7 is started, the first motor 7 drives the cam 11 to rotate. During the rotation of the cam 11, the protruding part of the cam 11 presses against the transmission member 14, causing the transmission member 14 to slide downward. During the downward sliding of the transmission member 14, on the one hand, it compresses the blow-suction member 18, and on the other hand, it drives the first connecting column 31 to slide along the path of the third guide groove 33. During the compression of the blow-suction member 18, the compressed air causes the piston rod 21 to slide into the piston tube 20, thereby causing the oscillating nozzle 23 to oscillate, so that before welding, the impurities at the point to be welded are gently blown away from the weld seam. During the sliding process of the first connecting column 31, the second connecting column 32 rotates along the rotating shaft, thereby driving the first guide 16 to rotate downward as a whole, so that the coating part 15 rotates downward from the discharge roller 42 and applies the pretreatment agent picked up from it to the surface of the steel structure to be welded; when the first motor 7 rotates in the opposite direction, it drives the swing nozzle 23 to swing in the opposite direction and drives the first guide 16 to rotate upward and reset, thereby driving the coating part 15 to rub against the discharge roller 42, thereby picking up the pretreatment agent inside the storage box 41, and at the same time scraping off the impurities on the surface of the coating part 15 through the discharge roller 42.

[0058] The pretreatment unit of this application can clean the welding position by blowing air through the swing nozzle 23 before welding, while the coating part 15 dips into the pretreatment agent in the storage box 41 and the coating pretreatment agent is dried by the swing nozzle 23 to accelerate evaporation and avoid the moisture in the pretreatment agent from affecting the welding process. At the same time, the swing nozzle 23 can also blow air to cool the weld after welding.

[0059] All standard parts used in this invention can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art, and the circuit connection adopts conventional connection methods in the prior art, which will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0060] It should be understood that those skilled in the art can make improvements or modifications based on the above description, and all such improvements and modifications should fall within the protection scope of the appended claims.

Claims

1. A steel structure welding machine, characterized in that, include: The welding module (4) includes: a moving module, a welding unit for welding, a pretreatment unit for pretreatment of the weld before welding, and a lifting module (5) that drives the welding unit and the pretreatment unit to move up and down synchronously. The top of the mobile module is equipped with a fan (25), and the air outlet of the fan (25) is connected to a swing nozzle (23). The pretreatment unit includes: a cam (11), a power component that drives the cam (11) to rotate; a cross-shaped mounting bracket (37) set on the lifting module (5), a guide block (13) connected to the cross-shaped mounting bracket (37), a transmission component (14) slidably connected to the guide block (13) in the vertical direction; a blow-suction component (18) that is drivenly connected to the bottom of the transmission component (14); a fixing component (19) connected to the blow-suction component (18); the air outlet end of the blow-suction component (18) is connected to a piston tube (20), a piston rod (21) is slidably installed in the piston tube (20), and a U-shaped hinge plate (22) is installed at the end of the piston rod (21), and the U-shaped hinge plate (22) is rotatably connected to the swing nozzle (23); The cross-shaped mounting bracket (37) is also rotatably connected to a second guide (17), and a third guide groove (33) is provided through the second guide (17). A first guide (16) is provided with a guide hole (35), a first guide groove (29), and a second guide groove (30) from top to bottom; an applicator (15) is slidably connected in the guide hole (35); a first connecting post (31) is slidably connected in the first guide groove (29), and a second connecting post (32) is slidably connected in the second guide groove (30). The first connecting post (31) is slidably connected to the third guide groove (33), and the first connecting post (31) passes through the third guide groove (33) and is rotatably connected to the transmission member (14); a connecting hole is also provided on one side of the third guide groove (33), and the second connecting post (32) is rotatably connected to the connecting hole.

2. The steel structure welding machine as described in claim 1, characterized in that, The power assembly includes: a motor mounting plate, mounted on top of the connecting frame (12); The first motor (7) is mounted on the motor mounting plate; The first synchronous pulley (8) is connected to the output end of the first motor (7) for transmission. The second synchronous pulley (10) is connected to the first synchronous pulley (8) via a synchronous belt (9); The cam (11) is connected to the second synchronous pulley (10) via a drive shaft.

3. A steel structure welding machine as described in claim 2, characterized in that, The transmission component (14) consists of a Z-shaped block, a vertical block fixedly installed on the top of the Z-shaped block, and a roller rotatably installed on the top of the vertical block. The roller is in rolling connection with the cam (11).

4. A steel structure welding machine as described in claim 1, characterized in that, The first connecting post (31) and the second connecting post (32) are connected by a telescopic connecting piece (34); the telescopic connecting piece (34) is disposed between the third guide groove (33) and the first guide (16).

5. A steel structure welding machine as described in claim 4, characterized in that, The coating component (15) includes: a sliding rod slidably connected to a guide hole (35), a U-shaped mounting plate mounted on the top of the sliding rod, and a coating head mounted inside the U-shaped mounting plate.

6. A steel structure welding machine as described in claim 5, characterized in that, The cross-shaped mounting bracket (37) is also connected to a storage box (41), and a discharge roller (42) is rotatably mounted on the bottom of the storage box (41).

7. A steel structure welding machine as described in claim 6, characterized in that, The welding unit includes: a connecting frame (12) mounted on the slide (6) of the lifting module (5), and a welding gun (24) mounted on the other end of the connecting frame (12).

8. A steel structure welding machine as described in claim 7, characterized in that, The mobile module (1) includes: a vehicle body (26), wheels (28) rotatably mounted on the bottom of the vehicle body (26), and a second motor (27) that drives the wheels (28) to rotate.

Images